Steam-boiler installation



Dec. y, 1925. 1,563.503

T. LARREY ET AL STEAM BOILER INSTALLATION 7oaor0 L arrtg. Luis Godard.

Dec. 1, 1925 1'. LARREY ET A1,

STEAM BOILER INSTALLATION Filed May 1, 1924 5 sheeis-sneet 2 Gummi Dec. 1, 1925- 1.563.503

T. LARREY ET Al.

STEAM BOILER INSTALLATION Fled May l. 1924 3 Sheets-Sheet 3 7e-odofo Laney. LLI/'S Godard.

atto: nu'

Patented Dec. i, 1925.

UNITED STATES TEODORO LARREY AND LUIS GODABD, OF MEXICO, MEXICO.

STEAM-BOILER INSTALLATION.

Application led May 1,

To all 107mm t may coa-cern:

Be it known that we, Tuonono LAnnnr and Luis Gobain), citizens of the United Mexican States, residingat Mexico city, Federal District, Mexico, have invented certain new and useful Improvements in Steam-Boiler Installations, `of which the followingl is a speci lication.

This invention relates to superheatingl and evaporating units combined with a heatdistributing` deflector, of which the following is a complete description.

Different kinds of superheaters for locomotive and other boilers are known, being` generally formed by tubes disposed in every flue in order to conduct saturated steam taken from a multiple feeding head to a multiple collector head of superheated steam, but all these multiples offer a serious inconvenience because owing to their reduced volume it is difficult to obtain tight unions, and furthermore the reduced space does not permit of an individual tightening of each tube to the said multiples. Consequently, the tightening is done in series of tubes which in itself constitutes a problem5 because a still greater eXactness at their faces of union is required and also a mutual correlation between all the tubes of the tighten- `ing piece.

In two inch flues of existing boilers no group of steam conducting` tubes could fit. In such boilers it has not been possible to linstalll steam superheating tubes, because no more than one single tube could fit within a Hue of two inch diameter, wherefore. it would have to project into the fire place and return by another flue.

No tube could resist thehigh temperature in the fire place, and if the tubes were made shorter than the flues, then no circulation of steam could be obtained. It has therefore been necessary to change the flues, substituting others oflarger diameter whenever a locomotive boiler is adapted for a superheating installation, and we intend to avoid such changes of fines by using single pipes, either straight or curved disposed within the flues eccentrically or concentrically, each tube' carrying in its interior a fiat dividing bar which will permit the passage of steam from one half of the tube to the other, the steam circulating by passing` around the end of the fiat bar and then continuing through the other half of the tube in the opposite direction; all said tubes being connected to a heat 1924. Serial No. 710,435.

distributing deflector. The deflector is divided into two parallel chambers for this particular use, one in order to distribute satA nrated steam and the other to receive the super-heated steam collected from all the pipes thereafter conducting it to the cylinders by the steam pipe, when the apparatus is working as a superheater, or to the boiler at a higher level than that of the water in the boiler when it works as an evaporator.

This invention also refers to a special construction of stopper providing entrance to and outlet from the tubes as well as to the heat distributing deiector.

Fig. l is a longitudinal vertical cross section of a locomotive equipped with a heat distributing deflector and our superheating units.

Fig. 2 is an end elevation of the smoke box showing the deflector and the superheating units.

Fig. 3 is a transverse cross section of a heat distributing deiiector having` one of our superheating units applied.

Fig. t is a horizontal cross section of a superheating unit mounted in its flue and a fraction of the defiector.

F 5 is a transverse cross section of a flue equipped with a superheating unit.

Fig. 6 is a longitudinal vertical cross section of a locomotive with deflector and evaporating units.

Fig. T is an ond elevation of the smoke box showing the deflector and evaporatingunits.

Fig. S is a transverse cross section of a flue with a straight pipe eccentrically disposed in same.

Fi 9 is a transverse cross section of a flue with a curved pipe.

Fig. 10 is a transverse cross section of an oval pipe with a channel iron soldered to it.

Fig. l1 is a transverse cross section of a rolled superheating or evaporating unit.

(l) is a smoke boX of a locomotive, the fine sheet (2) of which carries the common flues (3) of two inch diameter, while (4) is a saturated steam pipe which is joined to a T connection (5), the arms (6) of which are connected to the corresponding members of the heat distributing deflector (7). The latter is composed of the exterior plates (8) and (9) between which is placed the intermediate plate (10) which at its top prolongs into a flange (11) like the exterior plate (8) The exterior plate (9) is soldered against the said flange (11) on the middl? plate.

() and is also soldered along its edge to the lsmall flange of the exterior plate (8). Two separate chambers (11) and (12), one a distributing chamber, and the other a receiving` chamber, are thus formed.

In the lower part ot the detlector the middle plate (1(1) is recessed in Jr'ront ot the outlet (14) which is provided with a flange so that it. may be connected with the flange (15) ot' the pipe (1G)` conductingl superheated steam towards the cylinder trom that halt ot the detlector.

The plates (S), and (10) are maintained apart by the tubular spacing pieces (1T) through which pass the stay bolts (18).

ln each ot the tlues (3) that otler facilities 'tor superlwatingdue to their position, we dispose a tube (19), each said tube having a solid somewhat pointed tip (20) 'welded en to the extreme end. Now,r the other end o't` said tube (15)) is threaded and connected into the bored stopper (21) and linally soldered at (29 Lhe bored stopper (21) has an inlet pertoration (23) and an outlet per'tfo 1ation (Q4). each conununicatingr with the corresponding chamber (12) and (13).

The Aconical stopper (21) is threaded on its solid end (25) onwhich is placed a copper packing washer (Q6) held by the nut (27), the opposite end beingl 'termed with a retaining shoulder (2S) 'tor engagement with its packing ring ot copper.

Before the 'tube is connected to the conical bored stopper, a flat bar (S0) is inserted after having been edge-planed so that it will properly adjust itsel't along the diameter within the tube; then it is brought up against the solid end (25) while the opposite end must be spaced sulticiently trom the tip (20) to enable the volume ot steam to pass trom the upper part ot the pipe to its lower part.

le have shown three tubes of different cross section, vivia circular tube, an oval tube. and a third tube which was originally circular but ait'ierwards rolled, so that both sides ot the tube at the edges ot the flat bar are pressed together, thus maintaining in the middle oit the tube the flat bar which divides it into two equal parts or sections. lhen the tubes have been provided with their division bars (30), they can be placed within the tlues, either concentrically or eccentigically, or the end near the ireplace may be otlset (Fig.

At spaced intervals every tube carries rings (31) having radial feet (32), although such supports are not necessary. The end (25) ot the conical stopper is grooved at to indicate the position of the division bar (30).

ln Figs. .6 and 7 are seen some moditications, by which a heat distributing deflector with connected tubes (19) may operate as an evaporating device, the only dierence consisting, however, in the way of disposing the bored stoppers (21) because the pert'oration (2&3) should in this instance open downward aud the perforation should open upward. ln certain cases the tubes (19) ot course may be disposed so that the dividing walls (30) stand upon their edge either vertically or inclined.

ln the construction ol (5 and T the pipes (S4) which connect the inlet and outlet pipes are required tor each hall ot the dt-tlector. Here the entrance pipe (35) ot each halt is connected to the 'tlue sheet while the opposite end is connected to the chamber (12) ot' the defiector. An outlet pipe (3(5) extends through the tlue sheet (2) above the pipe (35), and the other end oii the pipe (3(5) is connected with the chamber (13) ot the detlector. Both parts ot the detlector are joined by angle irons (B7) and supported by feet (38) and stay bolts Having thus described our invention what we claim is: K

l. A superhea-ting unit, comprisinga tube closed at its inner end and havingr its outer end open and externally threaded; a tlat division bar disposed axially Within the tube and dividing the interior thereotl into two compartments, said bar terminating at its inner end short ot' the closed end ot the tube to permit communication at that end between said compartments, and projecting at its outer end through the open end o't the tube; and a stopper mounted on the threaded end ot the tube and having an axial bore which registers with the tube bore and which receives the projecting portion o't the bar so as to provide extensions of the tube compartments, the 'tree end of said projecting portion almtting against the end tall of. the stopper bore to prevent communication between the compartment exv tensions; said stopper being Yformed with a pair ot openings communicating directly with said extensions.

9.. A superheating` unit, according to claim 1, in which the closed inner end of the tube is pointed, and in which the stopper is of gradually-decreasing diameter from its inner to its outer end.

3. A superheating unit, accor-ding to claim 1, in Which the stopper is of graduallydecreasing diameter from its inner to its outer end and is formed adjacent its inner end with a circumferential centering shoulder, the outer end o't the stopper being reduced to 'form a similar shoulder and being externally threaded. Y

The combination, with a delicctor `embodying steam receivingand delivering chambers, of a super-heating unit comprising a tube closed at its inner end and open at its outer end; a stopper fitted on the open end of the tube and having a bore which forms Vif) a contimiation ot the tube bore; and means within the tube and stopper' bores dividing the interior thereo't into two compartments, said means abutting directly against the inner end oi the stopper bore but terminating short of the inner end of the tube bore so as to permit communication between said compartments at the latter end only; said stopper being formed with a pair of lateral openings which provide communication between one compartment and the steam delivering chamber and between the other compartment and the steam receiving chamber.

5. A steam installation, according to claim 4, iu which the steam delivering and receiving chambers are disposed vertically and face to face, and in which the openings in the stopper are disposed in different vertical planes.

6. The combination, with a` deflector embodying steam receiving and delivering chambers, of a superheating unit comprising a tube closed at its inner end and having its outer end open and externally threaded; a iat division bar disposed a-Xially within the tube and dividing the interior thereof into two compartments, said bar terminating at its inner end short of the closed end of the tube to permit communication at that end between said compartments, and projecting at its outer end through the open end of the tube; and a stopper mounted on the threaded end of the tube and having an aXial bore which registers with the tube bore and whic-h receives the project-ing portion of the bar so as to provide extensions of the tube compartments, the free end of said projecting portion abutting against the end wall ot the stopper bore to prevent communication between the compartment extensions; said stopper being formed with a pair of lateral openings which provide communication between one compartment and the steam delivering chamber and between the other compartment and the steam receiving chamber.

7. The combination, with a deector embodying parallel steam receiving and delivering chambers disposed face to face, of a multiplicity of superheating units each comprising a tube closed at its inner end and open at its Outer end; a stopper itted on the open end of each tube and having a bore which forms a continuation of the tube bore; and means within the bores of each tube and its related stopper to divide the interior thereoil into two compartments, said means abutting directly against the inner end of the stopper bore but terminating short of the inner end of the tube bore so as to permit communication between said compartments at the latter end only; each stopper being formed with a pair of lateral openings which are disposed in different vertical planes, one opening of each pair providing communication between one compartment of the corresponding tube and the steam delivering chamber and the other opening of each pair providing communication between the other compartment of the corresponding tube and the steam receiving` chamber, thereby to enable steam to be fed from the delivering chamber to all the tubes simultaneously, and from all the tubes simultaneously to the receiving chamber.

In testimony whereof we have aiixed our signatures.

TEODORO LARREY. LUIS GODARD. 

